Welding Rods

thanks for link

[Sberry]

Hobart makes a very good 7018 AC that is very easy to use.

[Sberry]

try this http://www.mylincolnelectric.com/Catalog/consumableseries.asp?browse=104|2030|Stick+Electro des+-+Mild+and+Low+Alloy+Steels

Is there anything on the internet that says what each ac welding rod is good for?
i am asking this because i just got stick welder and the only rods i have tried are 6013

Thanks